Get Wallet list with CoinBase REST API

Get Wallet list with CoinBase REST API

I want to create a http request for communicating with coinbase with private API keys. I cannot use a pre-existent library because my programming language is not supported. I need to create the HTTP request.

For example, I want to retrieve the list of wallets.

The headers of the HTTP request should be:

• CB-ACCESS-KEY: my private key. It's ok;
• CB-ACCESS-TIMESTAMP: Actual epoch time in seconds. It's ok;
• CB-VERSION: Date of the version used. It's ok;

I've a problem with the header CB-ACCESS-SIGN. According to the documentation:

The CB-ACCESS-SIGN header is generated by creating a sha256 HMAC using the secret key on the prehash string timestamp + method + requestPath + body (where + represents string concatenation). The timestamp value is the same as the CB-ACCESS-TIMESTAMP header.

I can create the HMAC hash given a string, but I don't understand what the string should be. I know what timestamp is, but I don't know what I should use for other fields of the string.

What should I put in this header in order to have a valid request? And how I should fix the url?

http://ift.tt/2CcMuS3